When his sister commits suicide as a result of his actions, Rokuheita, an enforcer for the Yagyu ninja clan, considers his choices and eventually deserts the organization. Hunted by an army of bizarre shadow warriors, the target turns on his pursuers when he finds something worth fighting for.

Yojiro ordonne à un samouraï de tuer un débiteur. Le samouraï décide de ne pas se fier au jugement de son maître, ce qui fait de lui un paria et il doit fuir...